SHOCK EXPERT HELP

[Rockwood]

A Little update as i forgot about this post.
the last two trips taken with the new shock tune and coil setup was absolutely 100x better than before chop is almost gone but i had to sacrifice some bump zone control. So ill continue to experiment as I go.

I did have one question though.
check this setup out. I have seen this on a few cars now and know this is one of Carl's secret sauces.
can some one explain how this works? I have a few theories but I would like to discuss with my dune friends.View attachment 145740View attachment 145741

The triple rate setup? Carl's using it for exactly what you're complaining about: more bump zone control. Using a firmer rate in the final bump zone makes it so you can run a softer shock (compression, at least, rebound will need firmer valving to prevent bucking off of the bump zone) since the spring is taking up some of the work. A cheaper way to accomplish this are running a larger poly stop to at least cushion the last little bit so it squishes off the stop rather than clangs off of it.

 

[ranman5608]

with my limited experience i have only ever seen a triple rate setup with the lightest on top then getting heavier towards the bottom.
it wasn't until recently when i really started to dive into the shock tuning world that i have seen the light spring in the middle setup

How does the math on this work with a softer spring in the middle of the setup?
are the two lower springs set up as you would measuring the corner weights and getting the dual rate setup dialed in then going with a slightly heavier weight spring than the original lower spring as a Bump spring and the bump zone is controlled solely with the crossover ring?
is the top spring set up so heavy that it doesn't really move until the center spring binds?

this stuff is very fascinating